G measuring the rotational speed of parts made of any

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Unformatted text preview: 39 3. Magnetic proximity sensors 3.1.4 Examples of application Fig. 3.1.6: Pneumatic cylinder with magnetic proximity sensors • Most widely known and used application: Cylinder switches • With the use of magnetic proximity sensors a wide range of other sensor problems can be solved if the object to be detected is fitted with a magnet, e.g.: – Measuring the rotational speed of parts made of any material – Selective sensing of individual workpieces from a similar series. – Incremental displacement encoding systems – Counting devices – Door switches – Material positioning 40 © Festo Didactic GmbH & Co. KG • FP 1110 3. Magnetic proximity sensors a) 1 b) 1 Permanent magnet on cylinder piston (1) a) The proximity sensor is unactuated; the switching contacts are open. b) With the approach of a magnetic field the switching contacts Fig. 3.1.7: Principle of application of magnetic proximity sensors for the detection of cylinder positions © Festo Didactic GmbH & Co. KG • FP 1110 41 3. Magnetic proximity sensors 3.2 Contactless magnetic proximity sensor 3.2.1 Function de...
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This note was uploaded on 11/01/2012 for the course CHEMICAL 102 taught by Professor Jamesrodriguez during the Spring '12 term at Universidad Politécnica de Cartagena.

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